Progress against the field
Between London 2024 and Birmingham 2026, Ben Grierson and Adele Grierson lost 8:18 to the field.
The clock says 2:06 slower, but the races themselves got 6:12 quicker for everyone.
The longest gap between two races compared here, 374 days between Birmingham 2025 and Birmingham 2026, cost 5:22 on the field.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown. The summary above covers Doubles Open · Mixed, with Adele Grierson, the one raced most; every comparison is in the list below.
Every race
12 races · 11 events
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Birmingham31 Oct 2026Doubles Open · Mixed1:04:2796/1159Beat 92%
↑ 374 days after Birmingham 2025, with Adele Grierson 5:22 worse than the field Why ↓Close ↑
5:22 behind the field: 3:05 slower on the clock, against 2:17 faster for everyone.
The fieldCompare these two →2:17 faster This pair3:05 slower -
Cardiff29 Apr 2026Individual Pro · Men1:16:32 PB235/533Beat 56%
↑ 98 days after Manchester 2026 3:06 better than the field Why ↓Close ↑
5:29 faster on the clock, and the race was 2:23 faster for everyone, so 3:06 of it was this athlete.
The fieldCompare these two →2:23 faster This athlete5:29 faster -
Manchester21 Jan 2026Individual Pro · Men1:22:0184/121Beat 31%
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London Excel4 Dec 2025Individual Open · Men1:37:512214/2771Beat 20%
↑ 188 days after Cardiff 2025 33:07 worse than the field Why ↓Close ↑
33:07 behind the field: 29:05 slower on the clock, against 4:02 faster for everyone.
The fieldCompare these two →4:02 faster This athlete29:05 slower -
London Excel4 Dec 2025Individual Open · Men1:07:47 PB289/2779Beat 90%
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Birmingham22 Oct 2025Doubles Open · Mixed1:01:22 PB40/954Beat 96%
↑ 224 days after Glasgow 2025, with Adele Grierson 1:20 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:06 faster on the clock, yet the race was 1:26 faster for everyone, so 1:20 was lost on the field.
The fieldCompare these two →1:26 faster This pair0:06 faster -
Cardiff30 May 2025Individual Open · Men1:08:46154/1401Beat 89%
↑ 587 days after Birmingham 2023 0:36 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:44 faster on the clock looks better than it was: the race was 6:20 faster for everyone, which leaves this 0:36 behind the field.
The fieldCompare these two →6:20 faster This athlete5:44 faster -
Glasgow12 Mar 2025Doubles Open · Mixed1:01:2820/841Beat 98%
↑ 103 days after London 2024, with Adele Grierson 1:36 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:53 faster on the clock, yet the race was 2:29 faster for everyone, so 1:36 was lost on the field.
The fieldCompare these two →2:29 faster This pair0:53 faster -
London29 Nov 2024Doubles Open · Mixed1:02:2110/521Beat 98%
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Madrid26 Oct 2024Doubles Open · Mixed1:04:2719/584Beat 97%
↑ 238 days after Glasgow 2024, with Adele Battersby 0:32 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:08 faster on the clock, yet the race was 1:40 faster for everyone, so 0:32 was lost on the field.
The fieldCompare these two →1:40 faster This pair1:08 faster -
Glasgow2 Mar 2024Doubles Open · Mixed1:05:3535/850Beat 96%
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Birmingham21 Oct 2023Individual Open · Men1:14:30165/1182Beat 86%